[T3] On my 73 square , what should I look at on the breather with a PCV?

[William Jahn]

I don't feel any missing driving under any load. Since with a standard
trans it's direct and an auto trans missing may not show in the same
manner. I have felt my car miss with the auto trans yet only when I was
coming to a stop and it really stood out when stopped. Yet it would always
clear by the next stop , I used to know when I used points because it would
miss at every stop replace the points and that would fix it. I can't recall
Keith if you have a standard or auto.

On Wed, Sep 11, 2019 at 6:03 PM Keith Park <topnotch at nycap.rr.com> wrote:

> I slotted the holes in the trigger points and clearanced the distributor a
> bit.  These were nearly new points, ones that you had adjusted too.  I get
> alot of missing under light throttle and lower RPM especially when the
> mixture is leaner with a stock setting, with the advance MOST of that goes
> away, Ray Greenwood had reccomended this mod with this cam, but I think I
> took it farther than he suggested, as it ran better that way.
>
> yea, I wonder when the T4 dist got this, or if they did... alot of changes
> were done at different times with the T4 and some were never done, like the
> late pressure sensors without the diaphragm that the T4 never got.
>
> Keith
>
>
> Topnotch Restorations
> topnotch at nycap.rr.com
> http://www.topnotchresto.com
> 71 Squareback  "Hothe"
> 65 Notchback  "El Baja Rojo"
> 93 RX7  "Redstur"
> 95 Chrysler Cirrus Lxi "Cirfogsalot"
> "hanging out at the tail end of the bell
> curve, and loving every minute of it!"
>
> -----Original Message-----
> From: type3-vwtype3.org [mailto:
> type3-vwtype3.org-bounces at lists.vwtype3.org]
> On Behalf Of Jim Adney
> Sent: Wednesday, September 11, 2019 10:46 AM
> To: type3 at vwtype3.org
> Subject: Re: [T3] On my 73 square , what should I look at on the breather
> with a PCV?
>
> Keith,
>
> Yes, really. The '72-3 distributors have the FI trigger cam rotated on the
> lower shaft by something like 15 degrees, which makes for 30 crankshaft
> degrees. The difference is easy to see when you compare lower shafts from
> different distributors. This change was for the 311 AE, AF, AG, and AH
> distributors. This was done so that all 4 injectors fire onto the backsides
> of
> CLOSED intake valves, so each cylinder worked the same.
>
> I don't know about Type 4 distributors. I assume they got the same
> treatment
>
> at some point.
>
> How did you make the change in your Type 4 distributor? Given how little
> difference it made in Type 3 engines, I'm skeptical that it would make a
> big
>
> difference in Type 4 engines. Any chance you just had a set of trigger
> points
> that was worn out of adjustment? THAT will certainly make for really poor
> operation.
>
> Jim
>
> On 10 Sep 2019 at 21:03, Keith Park wrote:
>
> > Really?  I didnt know this.
> > With the 2056 and the Raby 9550 cam, advancing the injector timing makes
> a
> > HUGE difference, I probably have it 10-15 degrees advanced from stock now
> > so that it runs properly and doesnt miss.
> >
> > Keith
> >
> > > I read on rennlist about the slop where the trigger points mount that
> > > it should be set to the center point since it will alter the point when
> > > the injectors fire .
> >
> > That's a red herring, because Bosch advanced the injector timing by
> about
> > 30 degrees in '72. That huge change made only a tiny difference, and
> then
> > only when the engine was cold.
> >
> >
> >
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>
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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